Cord-polishing machine and the like



E. I. FRIEDMAN. com) POLISHING MACHINE AND THE LIKE.

APPLICATION FILED MAR 21, 1919- I Patented Aug. 9, 1921..

KSHEETS-SHEET 1.

s sunssneer 2.

PatentedAug. 9, 1921.

E. I. FRIEDMAN.-

CORD POLISHJNG MACHINE AND THE LIKE.

APPLICATION FILED MAR. 21, 1919.

MEEMHMMEWMEWMM E. I. FRIEDMAN. CORD POLISHING MACHINE AND THE LIKE.

APPLICATION FILED MAR. 2|, 1919 1,387,045.

' jizflentof: /4 e55 Z522 faffl" 12 Patented Aug. 9, 1921.

3 SHEETS-SHEET 3.

raraia r OFFICE.

h EDWARD I. FRIEDMAN, OF CHICAGO, ILLINOIS.

CORD-POLISHING MACHINE AND THE LIKE.

Specification of Letters Patent. v P t t d A 9, .1921,

Application filed March 21, 1919. Serial No. 284,152.

To aZZ whom it may concern:

Be it known that I, EDWARD I. FRIEDMAN, a citizen of the United States,residing at Chicago, in the countyof Cook and State of Illinois, haveinvented certain new and useful Improvements inCord-Polishingll/Iachines and the like, of which the following is aspecification.

The present invention has to do with improvements inmachines forpolishing cords and the like, and will be found of wide applicabilityand usefulness in this class of I work. The features of the presentinvention quired to be polished or, smoothed in order to becomeserviceable for the purposes intended. These strings are also ofvariable length and size, and, therefore, any machine to become of wideusefulness in this art should be capable of handling or polishing cordof considerable variationsin length and size. One of the objects ofthepresent inventionis to produce such a machine.

' I will also state that it is necessary to pol ish the cords uniformlyon all sides or portions of them in circular fashion, and another objectof the present invention is to produce a machine capable ofaccomplishing this result.

Other objects of the invention are to provide a machine which shall bepractically automatic in its operation and so constructed that thecordswhen. delivered from the machine will be highly polished,notwithstanding the fact that in their original condition they wereextremely rough. c I Other objects and uses of the invention will appearfrom a detailed description of the same which consists in the featuresof construction and comb nations of parts hereinafter described andclaimed.

Referring to the drawings: I

Figure l shows'a planview of an assembled inaehine embodying thefeatures of the present invention, the polishing blockstandingvapproximately at the middle or central portion of its movement;

Fig. 2 is'a detailed cross sectional view taken on the line 22 of Fig.1, looking in the direction of the arrows;

Fig. 3 is a longitudinal vertical section taken on the line 33 of Fig.1, looking in the direction of thearrows;

Fig. 4 is a vertical cross section taken on the l ne 4-4 of Fig. 1,looking in the direction of the arrows; and

Fig. 5 is a detailed vertical section in fragmentary form taken on theline 5 50f:

Fig. 2, looking in the direction of the arrows.

I will first explain that the machine of the 7 present invention is soconstructed that the cords may be mountedin rectangular frames orcarriers whichare then introduced into the machine and travel throughit, and the cords are polished and finished during such travel throughthe machine.

Bearingthe foregoing in.mind, the machine illustrated in thedrawingsincludes a pan 10 of elongated formwhich may be supported in anyconvenient manner, as, for example, by means of the end brackets 11 and12. The material which is polished; (0a

from the cords falls into said pan and col lects' in the lower centralportion 13 thereofwhence it may be withdrawn by a suction fan 14 andremoved and delivered away from the operator so as to improve theconditions under which the operations are carried on. I 1 l In the endportions of the machinethere are provided the chain carriers-or thelike15 and 16 which travel in unison and serve to carry-the cordframes orcarriers across,

the machine during the polishing process.

These chain carriers travel over sprocket wheels17, 18, 19, and 20 inthe four corners of the machine, the carrierf15 traveling over thesprockets 17 and 19 and the carrier 16 over the sprockets 18 and .20.Theshafts 21 and 22'extend lengthwise of the machine being suitablyjournaled in the end brackets as is clearly evident particularly fromFigs. 3 and 4:. a

A motor 23 drives the suction fan 14 through the medium of a jack shaft24, which jack shaft passes centrally under the machine. This jack shaftdrives the sprocket 21 through the medium of a chain 25, and by sodriving the sprocket shaft 21, the sprocket shaft 23 is also drivensince both of said sprocket shafts are connected together by the chaincarriers 15 and 16.

The chain carrier 15 is fixed in position at one end of the machine,while the chain carrier l6 and its sprockets and the cooperatingmechanism presently to be described are adjustably mounted in the otherend of the machine, so that they may be set back and forth intodifferent positions according to the length of the cords to be operatedon. For this purpose the sprockets 18 and 20 are feather-keyed to theirrespective shafts 21 and 22. A stationary housing 26 is provided at thefixed end of the machine within which housing is journaled a worm orscrew shaft 27, as is clearly evident from an examination of Figs. 1 andThe chain carrier 15 also travels through this housing and adjacent tothe shaft 27. At the adjustable end of the machine, there is a move ablehousing 28 within which is journaled another worm or screw shaft 29, theconstruction of which will be clearly evident from Figs. 1, 2, 3, 4 and5. The chain carrier 16 also travels through the housing 28 at a pointadjacent the shaft 29.

The adjustable housing 28 has its end portions resting upon the flangesor seats 30 and 31 of the table,-which said seats are provided with tapscrew holes 32 and 33 by means of which the housing 28 may be secured inany adjusted position according to the length of the cords to beoperated upon.

Each of the cord frames comprises end portions 34 and 35 in conjunctionwith connecting side walls 36 and 37. Each of the end walls 34 and 35carriesa number of hooks 38 which are journaled therein, so that theycan rotate,'and said hooks 38 are "provided with worm pinions 39 ontheir outer or protruding ends. The worms 39 at one end of the framemesh with the worm screw 27, and the worms 39 at the other end 7 of theframe mesh with the worm screw 29.

Consequently by rotating said screws 27 and 29, the hooks will berotated, and by properly proportioning the parts, the hooks will berotated in unison as the frame travels across the machine. It will beunderstood that the cords 40 are stretched between the hooks in pairs asis clearly evident from the examination of Figs. 1, 2, 3, and 4.

The worms 27 and 29 are caused to rotate in unison by means of a chain41 passing 'over sprockets on said worms. The worm 27 is driven from theshaft 24 by means of a chaln 42 passing over a sprocket 43 on said shaftand over a sprocket 44 on a stub shaft 45. The stub shaft drives a risershaft 46 through the medium of the beveled gear pinion 47, the risershaft in turn driving the worm 27 through the medium of a worm andpinion 48. Thus the worms 27 and 29 are driven in harmony with the shaft24, and, therefore, also in harmony with the carrier chains 15 and 16.

Vith the arrangement thus far described, the frames with the cords willbe carried through the machine, while the cords are rotated during suchtravel. I will now describe the mechanism provided for polishing thecords as they go through the machine. For this purpose, I have provideda shoe 49 of width equal to the operating width of the machine, whichshoe carries on its lower surface the sand paper or other abrasive,material which operates on the cords. As a matter of convenience, theshoe ordinarily carries three different grades of such polishingmaterial, so that as each frame with its cords passes through themachine, it will first be subjected to a coarse abrasive, then to amedium coarse abrasive, and finally to a fine abrasive material.

The shoe 49 is caused to travel back and forth lengthwise of the cords anumber of times during the travel of the machine. This is done by theprovision of a worm screw 50 journaled above the cords in the fixedjournal 51 and the movable journal 52, the movable journal 52 being anupward extension from the adjustable housing 28. The shoe 49 is providedwith an arm 53 which reaches up to the screw 50 and is engaged thereby,so that by rotating the screw the shoe will be caused to travel back andforth.

The screw carries a beveled gear 51 which is in mesh with upper andlower beveled gears 55 and 56. A riser shaft 57 is driven from the motorshaft 24 through the medium of the beveled gears 58, and said risershaft carries a clutch block 59 between the beveled gears 55 and 56, sothat by shifting said clutch block back and forth itwill be possible tocause the same to drive either of the beveled gears, the clutch blockbeing featherkeyed to the shaft 57. In this way, the rotation of thescrew shaft 50 can be periodically reversed. This periodical reversalcan be effected through the medium of a pair of col lars 60 and 61slidably mounted on the shaft 50, and which collars are connected to arod 62 which operates the clutch block 59 through the medium of a bellcrank 63. By properly setting the collars 60 and 61 on the rod 62, saidrod will be shifted'back and forth so as to automatically reverse themovement of the shoe 49 at the end of the travel in each direction.

I wish to point out the fact that, by the use of the worm shafts 27 and29, the cords may be caused to rotate any desired number of times ontheir own axes as they travel across the machine. This will insure amore perfect and complete polishing of each and every portion of: thecords than would be secured with a less number of rotations.

WVhile I have hereinshown and described only a single embodiment of thefeatures of my present invention, still I wish it clearly understoodthatI do not limit myself tosaid embodiment except as I may do so in theclaims.

I claim:

1. In a machine of the class described the combination with a mainframe, of a pair of chain carriers mounted for carrying move menttransversely thereof, a worm screw adjacent to each of said chaincarriers, means for driving the worm screws in unison, a polishing shoeadapted for reciprocatingmotion back and forth between the chaincarriers, abrasive material on the lower surface of said shoe, alongitudinally extending worm screw, an operative connection be tweensaid screw and shoe aforesaid, a reversal clutch mechanism inconjunction with said screw, means in conjunction with said shoe forreversing said clutch mechanism at each end of the travel of the shoe,and a plurality of supplemental cord frames adapted to be supported byand moved with the chain carriers, each of said supplemental frameshaving in its end port-ions rotatable cord hooks, and a worm 011 eachcord hook for engagement with the adjacent transverse worm screw, forthe purpose of causing rotation of the cord hooks during the movement ofthe supplemental frames through the machine, substantially as described.

2. In a machine of the class described, the combination with a mainframe, of a pair of transversely extending worm screws therein, asupplemental frame carrier adjacent to each of said worm screws, meansfor driving the worm screws in unison, a polishing shoe, abrasivematerial on its lower surface, alongitudinally extending worm screw,means for rotating the same and for periodically reversing its directionof rotation for the purpose of moving the shoe back and forth in themachine, and a plurality of supplemental cord frames adapted to besupported by and carried with the carriers aforesaid, each of said cordframes having in its end portions worms adapted for engagement with theworm screws aforesaid for rotation thereby, substantially as described.

8. In a machine of the class described, the combination with a mainframe, of a plurality of supplemental cord frames, means for carryingsaid cord frames transversely of the main frame, each cord frame havingin its end portions rotatable cord hooks, worms on said cord hooks, wormscrews in the main frame adapted for cooperation with the worms on thehooks, means for driving the worm screws in unison, a polishing shoe,abrasive material on its lower face, and means for moving said shoe backand forth periodically, substantially as described. V I V at. In amachine of the class described, the combination with a main frame,-of aplurality of supplemental cord frames, means formovingsaid cord framestransversely of the main frame, cord hooks in the end portions of thecord frames, means for rotating said cord hooks as the cord frames aremoved transversely of the main frame, a polishing shoe, abrasivematerial on its lower face, and means for moving said polishing shoeback and forth as the supplemental cord frames are moved through themachine, substantially as described.

5. In a machine of the class described, the combination with a mainframe, of a plurality of supplemental cord frames, cord hooks rotatablymounted in the end portions of said cord frames, means for moving thecord frames transversely of the main frame, means for rotating the cordhooks during such movement, an abrading device mounted above the cordframes, and means for moving said abrading device back and forth,substantially as described.

6. In a machine of the class described, the combination with a mainframe, of a plurality of supplemental cord frames, means for moving saidcord frames transversely with respect to the cords, cord hooks in thecord frames, an abrading device mounted above the cord frames, and meansfor moving said abrading device back and forth during the movement ofthe cord frames through the machine, substantially as described. I

7. In a machine of the class described, the combination of means forsupporting a series of cords under tension, means for moving saidsupporting means transversely of the cords while maintaining, them undertension, abrading means for contact with the cords under tension, andmeans for moving said abrading means lengthwise of the cords whilemaintaining contact with them, substantially as described.

8. Ina machine of the class described, the combination of abradingmeans, means for moving the same in one direction in one plane, a seriesof cords lying in another, plane parallel to the first mentioned planeand in contact with the. abrading means, means for rotating the cords ontheir own axes, and means for moving said cords in their plane in adirection, transversely of their length while they rotate on their axes,

substantially as described.

9. In a machine of the class described, the combination of abradingmeans, means for moving the same in one direction in one plane, a seriesof cords lying in another plane parallel to the first mentioned planeand in contact With the abrading means, and to the first mentionedplane, and means for means for moving said cords in their plane, Causinga relative movement of the abrad- 10 and rotating them on their axes,substaning means and the cords so that any point tially as described. onthe abrading surface moves With respect 10. In a machine of the classdescribed, to the cords transversely of their length and the combinationof abrading means, means for rotating the cords on their own axes,

for supporting the same in one plane, a sesubstantially as described.ries of cords lying in another plane parallel EDWARD I. FRIEDMAN.

